-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Well, it's a general problem. Depending upon your phone plan, using SMS might make sense or not. If SMS are free, that's nice, although I doubt you'll manage to run a ppp session with mtu 150 over it :-P
Generically speaking, SMS are certainly more complicated to deal with: GPRS is simple TCP/IP. SMS are special modem commands to the GSM module. GPRS means that basically any server connected to the Internet can probably communicate with the phone. SMS means the server needs either some special Internet service to send and receive!!! SMS, or a not exactly free-of-costs GSM module. In practice you would need completly free and unlimited SMS so that it makes somehow sense. Even 1ct per SMS ruins the economy, => US$/CDN$/EUR 70 per MB (depending if the cent was US/CDN/EUR *g*), combined with an extremly low bandwidth (there is a limit how many SMS you can send/receive per minute with a GSM module). > I guess SMS is generally more accessable and tends to be a lot cheaper, It depends. E.g. my German calling plan includes an UMTS flatrate, but SMS are 30ct per piece. At least with UMTS + Opera on the phone the sms.at website (that allows me to send cheap/free SMS) is usuable well enough :) My Austrian calling plan has 250MB UMTS, GPRS flatrate (basically UMTS with a speed limit after the included MB), and 1000 SMS included. That makes sending data via GPRS the safer option, cost wise. > often free, in Toronto and most of Canada. Phones could transmit > position continuously to a central server, or some centralized > mechanisim, and I'm thinking it would be much easier for a centralized > server program to notify phones reliably with SMS, rather then depend on > a data connection. SMS are not reliable. OTOH, you can get a send report, although these often cost extra :( Andreas > > Basically by using SMS it would be a more accesable and reliable > application that could be run continously by the participants. Tie it > into a social networking site maybe too. > > Matt > > > > > -----Original Message----- > From: Dean Collins [mailto:[EMAIL PROTECTED] > Sent: Monday, May 28, 2007 5:16 PM > To: Crane, Matthew; OpenMoko > Subject: RE: GPS+sms apps > > Why would you need SMS - if you are running a data plan already to track > cell tower and relative position to other Neo users then you may as well > make it a self contained application. > > > > Regards, > > Dean Collins > Cognation Pty Ltd > [EMAIL PROTECTED] > > > >> -----Original Message----- >> From: [EMAIL PROTECTED] [mailto:community- >> [EMAIL PROTECTED] On Behalf Of Crane, Matthew >> Sent: Monday, 28 May 2007 4:57 PM >> To: OpenMoko >> Subject: GPS+sms apps >> >> >> Is there any existing application which combine sms messaging and GPS? >> It would be pretty cool to get automated alerts whenever a particular >> person is nearby, through a central machine (phone, desktop). Or to > use >> some sort of automated homing application, where two people are able > to >> lock to each other and the phone guides them, notifying the other > device >> when the route or position has changed. >> >> Matt >> >> _______________________________________________ >> OpenMoko community mailing list >> [email protected] >> http://lists.openmoko.org/mailman/listinfo/community > > _______________________________________________ > OpenMoko community mailing list > [email protected] > http://lists.openmoko.org/mailman/listinfo/community -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGXDBqHJdudm4KnO0RAuBaAJ9RbeGxNpLgqVBz+YtZ9TM3hmL0mACeOTV7 YaYmRlHlU/iqDp0Oz2Hx4W4= =/JXJ -----END PGP SIGNATURE----- _______________________________________________ OpenMoko community mailing list [email protected] http://lists.openmoko.org/mailman/listinfo/community
